FAN53418 ,Synchronous DC-DC MOSFET DriverApplications Section for detailed information.2IN PWM Signal Input. This pin accepts a digital logi ..
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FAN53418-FAN53418MX
Synchronous DC-DC MOSFET Driver
Features Drives N-channel High-Side and Low-Side MOSFETs in
a synchronous buck configuration Internal Adaptive “Shoot-Through” Protection High Switching Frequency (> 500kHz) 30ns Output Rise/Fall Times w/3000pF load 20ns Propagation Delay 12V High-Side and 12V Low-Side Drive
•OD input for Output Disable – allows for synchronization
with PWM controller SOIC-8 Package
Applications Multi-phase VRM/VRD regulators for Microprocessor
Power High Current/High Frequency DC/DC Converters High Power Modular Power Supplies
General DescriptionThe FAN53418 is a high frequency, dual MOSFET driver
specifically designed to drive two power N-Channel
MOSFETs in a synchronous rectified buck converter.
These drivers combined with a FAN53168 Multi-Phase Buck
PWM controller and power MOSFETs form a complete core
voltage regulator solution for advanced microprocessors.
The FAN53418 drives both the upper and lower gates in a
synchronous rectifier to +12V. The upper gate drive imple-
ments bootstrapping with only an external capacitor and
diode required. This reduces implementation complexity
and allows the use of higher performance, cost effective,
N-Channel MOSFETs.
The output drivers in the FAN53418 have the capacity to
efficiently switch power MOSFETs at frequencies over
500kHz. Each driver is capable of driving a 3000pF load
with a ~20ns propagation delay and ~30ns transition time.
Adaptive shoot-through protection is integrated to prevent
both MOSFETs from conducting simultaneously. Addition-
ally an Output Disable function is included to synchronize
the driver with the PWM controller. The FAN53418 is
rated for operation from 0°C to +85°C and is available in a
low-cost SOIC-8 package.
Basic Application
